Chart-holder.



'PATENTED JAN. '7, 1908.

I. W. BUYER. CHART HOLDER. APPLICATION FILED JUNE 1, 1907.

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25. chart-ho FRANK WOODRUFF BOYER, OF NEW YORK, N. Y.

CHART-HOLDER.

Specification of Letters Patent.

Patented Jan. 7, 1908.

Application filed June 1. 1907- Serial No. 876.784.

To all whom it may concern.-

Be it known that I, FRANK WOODRUEF BOYER, a citizen of the UnitedStates, residing at New York, in the county of New York and State of NewYork, have invented new and useful Improvements in Chart-Holders, ofwhich the following is a specification.

This invention relates to certain new and useful improvements in chartholders, and is articularly adapted for use by navigators.

he object of the invention is to provide navigators with an apparatusfor the ready and convenient display of their charts, and further inroviding a chart-holder whereby a chart while bein held may be readilysgifted so as to disp ay any desired portion 0 it.

The invention further aims to provide a chart holder with means wherebywhen the chart isdis layed, it can be illuminated and protected 0111 theelements, so that the chart ma} be used if desired on an open deck ofavesse in the night and in stormy weather.

The i vention further aims to rovide'a ider with a single rotatab eshiftingmeans which when operatedin either direction, will cause theshifting of the chart.

The invention further aims to construct a chart-holder which shall besimple in its construction, strong, durable, eflicient in its use andcomparatively inexpensive to set up.

With the foregoing and other objects 1n view, the invention consists ofthe novel combination and arran ement of parts hereinafter morespecifica ly described, illustrated in the accompanying drawings, andparticularly pointed out in the claims hereunto applelnded.

' describing the invention in detail, reference is had to theaccompanying drawings forming a part of this specification, wherein likereference characters denote corresponding arts throughout the severalviews, and inw ch I Figure 1 is a transverse section of the chartholder; Fig. 2 is a plan, and Fig. 3 is a sectional detail.

Referring to the drawings by reference characters, the chart-holderconsists of a casing formed in two sections the lower of which isdesignated by the reference character 1 and the upper of which by thereference character 2. The lower section is of considerable more depththan the upper section, and may ,and attached to the sidewall of thelower section 1 is a bearing be termed a receptacle, and the uppersection may be termed the lid or cover therefor. The upper edges of thefront and rear walls of the lower section are provided with a pluralityof recesses 3, whic 1 are adapted to receive a plurality of pins 4depending from the lower edges of the front and rear .walls of the uppersection 2.

The pins 4 are adapted to connect the sections 1 and 2 together. The topof the upper section 2 is formed of transparent material, as indicatedby the reference character 5, and in this connection, a sheet of glassis preferably employed. This will permit of the navigator inspecting thechart, which will be hereinafter referred to. Arran ed within andsecured to the bottom of the ower section 1 is a pair ofupwardly-extendim supports 6, 7, which are arranged a suitab le distanceapart, and each provided with an opening 8, t ter referred to. Mountedupon and secured to the to of the supports is a rectangular plate 90transparent material over which passes the chart to be hereinafterreferred to. The plate 9 is adaptedto prevent'the saggin of the chart,and has its lower face bevele as at 10.

Arranged Within the lower section 1 and between the supports, 6, 7 is anilluminating device 11 preferably a pair of electric blow lamps suitablysurrounded by a shield 12 to prevent the heat from the lamps injuringthe chart when wound upon the rollers, to be .hereinafter referred to.The supports 6 and 7 are each provided with a suitable socket 13 for thelamp which is adapted to be connected to a source of electrical supply.

Secured to the inner face of one side wall of the lower section 1 is abearing late 14 inner face of t e other plate 15. The latter is adaptedto support one end of the axes 16, 17 of the rollers 18, 19,respectively, and is also adapted to support one end of the operatingshaft 20.. The other end of the axes 16, 17 and shaft 20 extends throughthe plate 14 and the side wall to which said plate 14 is connected. Theshaft 20 extends through the openings 8 in the supports 6, 7, andcarries an enlarged gear-wheel 21, the latter being fixed on the shaftand on the outer end of the shaft 20 is a milled head 22 to permit ofreadily operate function of which will be hereinaf respective axis, sothat ing the shaft 20. Loosely mounted upon the axes 16, 17 are thepinions 23, 24, respectively, and that end of each of the axes 16, 17

upon which the pinions 23, 24 are mounted,

1s providedwwith agroove. 25 inawhichoperates a feather or spline 26. 4The inner end of the spline 26 is adapted to engage in a groove 27formed in the pinion 23 or 24 as the case may be. The outer end of thefeather 26 is Connected to a milled button 28 mounted upon the outer endof the axes. By such an arrangement, the axis 16 or 17 can be operatedindependently of the operating shaft 20 and its gear-wheel 21, so thatany slack in the chart can be taken up and when it is desired to shiftthe chart throu h the medium of the shaft 20 and gear 21 ad that isnecessary is to move the button 28 inwardly, which imparts a likemovement to the spline or feather 26 and causes the same to engage inthe groove 27 and lock the pinion to its when the shaft 20 is operated,motion will then be imparted through the medium of the gear 21 to thepinion and its respective roller.

The reference character 29 denotes the chart which is secured at one endto the roller 18 and at its opposite end to the roller 19. The chart isadapted to show the various courses, the various soundings, the vari-.

ous lighthouses and other matters which a navigators chart should beprovided with.

By the arrangement of the pinions and gear as set forth, it will beevident that by turnin the milled head 22 when the pinions are 100 ed totheir respective axes, motion will be imparted toboth of the rollers,causing the chart to unwind from one roller and wind up upon the otherroller, and when the milled head 22 is turned in the opposite direction,a contra-movement will be imparted to the chart. By this arrangement asepa-- rate operating means for each roller is dispensed with.

The chart-holder is such that it can be mounted upon a support in closeproximity to the navigator, preferably on a support directly in front ofthe wheel, so that when the navigator steers, all that is necessary forhim to do to find out his course, or other information from the chart isto look over the wheel and down, thus overcoming the objection ofscanning the entire chart, the chart generally being suspended from asuitable sup ort in front, and above the navigator. As t e vesselcontinues on its course, the'chart can be shifted slightly so that allthe navigator has to do is to scan a small portion of the chart toobtain the information desired.

In the embodiment of the invention as shown by the drawings, theilluminating device illustrated is an electrical one, but the plicationis not limited to the employment such an arrangement as any form ofilluminating device can be employed, and the proing device of anycharacter, permits of the chart being used at night and on the open deckif desired, and by inclosing the chart in the manneras set forth, thechart-holder may be used on. the open deck in stormy weather.

It is thought the many advantages of my restrict myself to the detailsof construction hereinbefore described and illustrated in theaccompanying drawings, but reserve the right to make such changes,variations and modifications as come properly within the scope of theappended claims.

What I claim is 1. A chartholder comprising a casing formed of anupperand a lower'section, said upper section provided with a transparent top,a transparent plate supported by said lower section, a pair of rollerssupported in said lower section, a chart suitably connected to saidrollers, means carried by said rollers whereby each of them can beoperated independently, causing thereby the operation in oppositedirections of the rollers, an operatboth rollers for operating them, andmeans for connecting and disconnecting the rollers to and from saidoperating means to permit of the operation in opposite directions of therollers independently of each other.

2. A chart-holder comprising a casing provided with a transparent top, apair of rollers rotatably mounted in said casing and having their axesat one end projecting through one Wall of the casing, a chart connectedto the rollers and adapted to be wound thereon and unwound therefrom, apinion loosely mounted on the axis of each of said rollers, adjustablemeans mounted on the projecting ends of the said axes for connecting theinions thereto, and means engaging with t e pinions and adapted whenoperated, to impart movement to said rollers when said pinions areconnected to the axes, said adjustable means adapted to operate saidrollers independently .of each other when the pinions are disconnectedfrom the axes.

3. In combination, a pair of rotatable rollers, means for supporting theaxes of said rollers, means carried by said rollers whereby each of themcan be operated independeptly, causingthereby the operation in oppositedirections of the rollers, an operating means simultaneously engagingwith both rollers for operating them, a chart connected to the mg meanssimultaneously engaging with viding of the chart-holder with anilluminatimproved chart-holder for a convenient dissaid rollers andadapted and unwound therefrom when the said means is operated, and meansfor disconnecting the rollers from said operating means to permit of theoperation in opposite directions of the rollers independently of eachother.

In testimony whereof I have hereunto set to he wound thereon I my handin presence of two subscribing Witnesses.

FRANK WOODRUFF BOYER.

Witnesses:

FREDERICK BARRIE, Enso M. ZABRISKIE.

